as of my memory, RELP support was scheduled for the new WinSyslog release. I will check if something went wrong in the final customization step. In the meantime, you can test out the functionality with MonitorWare Agent (http://www.mwagent.com), which is a kind of super-WinSyslog.

... and as a side-note, I think you need MonitorWare Agent or EventReporter in any case, because WinSyslog is a syslog *server*, but does not forward event log messages.